Maintenance And Cleaning - WIKA TR31-3 Betriebsanleitung

9. Faults / 10. Maintenance and cleaning
Faults
Display of measured
value jumps
Corrosion
Signal interference

10. Maintenance and cleaning

For contact details see chapter 1 "General information" or the
back page of the operating instructions.
10.1 Maintenance
The resistance thermometers described here require absolutely no
maintenance and contain no components which could be repaired or
replaced.
WIKA operating instructions models TR31-3, TR31-K
Causes
Cable break in
connecting cable or
loose contact caused by
mechanical overload
Composition of the
medium not as expected
or modified
Stray currents caused
by electric fields or earth
loops
Earth loops
Measures
Replace the sensor or use
thicker conductor cross-
section
Analyse the medium
Use of screened
connecting cables,
increase in the distance to
motors and power lines
Elimination of potentials,
use of galvanically isolated
transmitter supply isolators
or transmitters
EN
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